Gas burner assembly



June 15, 1937. A P, s, HARPER 2,083,602

GAS BURNER ASSEMBLY Filed Aug. 20, 1956 2 Sheets-Sheet 1 @if f@ y Junel5, 1937. P. s. HARPER v 2,083,602

' GAS BURNER ASSEMBLY Filed Aug. 2o. 19:56 '2 Asham-sheet 2 l si n"unulmlmu im djd/P2K' Patented June l5, 1937 UNITED STATES PATENT OFFICEaosasoa GAS BURNER ASSEMBLY Philip S. Harper, Chicago, Ill. ApplicationAugust 20, 1936, Serial No. 96,938

and particularly to a top burner assembly of thetype, used in kitchenranges in which a central simmer burner is `placed within the area of acentrai hole through a large main burner.

The invention consists of a new and improved double burner constructionwhich enables quick and positive ignition of an outer annular mainburner from a centrally located simmer burner without sacrificingdesirable operating characteristics and design features of eitherburner.

The-type of burner shown has a central section forming a simmer burnerand an outer main burner section enclosing an annular burner chamber andsurrounding thev simmer burner. The simmer section is spaced from theannular main burner section to allow free access of Isecondary air tothe simmer burner. This general type of burner has been developed to thepoint where the industry has accepted its value and the double burnerprinciple is coming increasingly into popular use. My co-pendingapplication Serial No. 709,449, shows this general double burnerconstruction. It has come to be well recognized in the art that thesimmer burner should be centrally located beneath the cooking vessel andhence centrally located within the area ofthe main burner. Also thesimmer burner must be directly ignited from the pilot light because thisburner attirnes functions independently of the main burner. 'I'he mainburner may light from the pilot light but also may light from the simmersection because the simmer burner is always burning when the main burneris in operation. Preferably the main burner should light from the simmerburner because of its proximity thereto and because ignition of anadditional burner section from the common pilot light would causeignition difficulties. There ls a limit to the 40 number of burnerswhich can be ignited from the common pilot. y Y

Thus, from the standpoint of sound design, it is practically determinedthat the main burner should be ignited from the centrally located.

simmer burner. 'I'his result has 4heen eiectively accomplished byvconstructing the burners as shown in my copending application Serial No.709,449. However, the burner shown therein is not sufficiently flexiblein design. Theports have to be arranged substantially as shown and haveto be located very close to certain definite levels and the centralportion must be cone-shaped in order that proper results are secured.

In the former construction in order to obtain positive lighting, themain burnerports were ypleasing in appearance.

slotted with the top wall of the slot extending upward at a 45 angle.This particular form oi burner port facilitates lighting by imparting acurling action to the gas issuing from the ports. The gas iiows upwardand curls inward over the 5 top of the burner to a point where itreadily ignites from the simmer burner. In order to have positivelighting of the main burner the ports were formed in the mannerdescribed and also it was found'that the outer main burner ports had tobe 10 located at a high level relative to the simmer burner ports.-While this arrangement is very conducive to rapid ignition, eiiiciencyand capacity of the burner have been sacriiiced and also the manufactureis expensive. l5

The burner disclosed herein is an improvement over the constructionshown in application Serial .No. 709,449 in that certain desirablefeatures can be and are incorporated in this burner which are notobtainable in the former construction. For 20 instance, in thedevelopment of single burners it has been found that in ring shapedburners it is advantageous to have the ports drilled horizontally notonly because of appearance and nonclogging properties, but also becauseof the in- 25 creased emciency of the burner at both high and low ratesof iuelconsumption.

Heretofore, no one has eiectively designed a double burner employing thevaluable principle of having horizontally discharging ports in the 30outer .main burner for the reason that a main burner so constructed willnot ignite from a centrally located simmer burner. My invention makespossible the manufacture of such a burner and also makes possiblefurther leeway in the 35 design of double burners, and provides meanswhereby the outer main burner is automatically ignited from the simmerburner.

An object of this invention is the manufacture of a double burner inwhich greater eiiiciency in 4o the consumption of fuel is attained.

A second object oi' this invention is the manufacture of a double burnerin which economy of operation is accomplished and which is also 45 Afurther object of this invention is the manufacture of a double burnerhaving a high eiiiciency and a large capacity while at the same timeholding the diameter of the burner within practical w dimensionallimits. k

An object of this invention -is to construct a double burner in whichthe main burner is directly and positively ignited from the simmerburner without the necessity of a particular location and 55 directionof the main burner ports relative to the simmer burner ports.

A further object of this invention is an economical double burnerconstruction.

These and other objects will be more apparent from the drawings, inwhichi Figure 1 is a plan view showing a four-burner assembly;

Figure 2 is a side elevation of the four-burner assembly; l l

Figure 3 is a partial section on line 3-3 of Figure 1;

Figure 4 is a partial section on line 4-4 of Figure l; and

Figures 5 and 6 show a modified form ci the burner shown in Figures 1 to4.

Referring now to the drawings, Figures l to 4 show the preferred form ofmy invention. Gas valves numbered I I are mounted in a gas supplymanifold I2 and each valve has two orifice caps I3 and I4 disposed oneabove the other and providing for discharge of gas.

The burners are made of individual burner heads I5 bolted or otherwisesecured to castings I6 and I1 which contain mixing Itubes therein forthe purpose of properly mixing air and gas before ignition at the burnerports. Castings I6 and I1 are supported at one end by means of a strapI8 and are located in a stove by means of pins I9, I9 which drop intoholes in the strap I6. The other end of castings I6 and I1 rest on theorifice caps I3 and I4 of the'individual valves II.

Referring to the individual burners, the burner head I5 forms the-upperclosure for both the simmer burner chamber 2-I and the annular mainburner chamber 22. 'head enclosing the simmer burner chamber issubstantially cylindrical as shown, with the top closed and burner ports23 extend through the top closing wall. A single lighter port 24 isdrilled through the side cylindrical Wall of the simmer burner. Thevportion of the burner head enclosing the main burner is annular andchannel-shaped in cross section and is spaced from the simmer. burnerportion, being connected thereto by means of the horizontally disposedflatY portion 25. The flat portion 25 is located above the lighter port24 of the simmer burner and forms a baiile restricting the upward draftof air. A small hole 26 is cast in the iiat portion to allow iiashingfrom the lighter port 24 to the simmer burner ports 23 in ignition ofthe simmer burner.

Considering the burner head, the main burner portion has a series ofhorizontally directed ports 20 drilled through the outer cylindricalwalls. A i'lash tube 21 is pressed through both inside and outsidecylindrical w'alls. The inner opening of the ash'tube is locatedopposite the lighter pilot in the simmer section so that gas issuingfrom' the lighter port will enter the flash tube and travel down thetube toward the pilot light head 28' located at the other end thereof. Asecond tube 29 disposed above the flat portion 25 and op'en at both endspasses through both cylindrical walls of the-annular main burnerportion. A port 30 is drilled through the wall of this tube allowingflow of gas from the main burner chamber 22 into the tube 29. y

The cast-iron portion forms the lower closure for both the Simmer burnerchamber and the main burn'er chamber and has therein a mixing tube 3|o'f proper design for discharging the correct combustible air-gasmixture into the The portion of the burner simmer burner is turned ongas from the-lighter port 24 travels down the flash tube 21 to a flameburning at the pilot head where the gas is ignited. Then the flametravels back to the port and upward through the opening 26 to the simmerburner ports. When gas is directed to the main burner, gas dischargesfrom the port 30 into the tube 29. The gas lls the tube 29 and ignitesat the end adjacent the simmer burner and.

thence the flame travels outward through the tube, flashing up to themain burnerports and igniting the main burner. The gas issuing from port30 continues to burn after ignition and as long as the main burner is inoperation.

Figures 5 and 6 show a modified form of the invention operating on thesame principle and fully within the scope of this invention. In thismodied form the burner head differs slightly in shapeand the port 35 isdrilled in a small fitting 36 which is screwed into the extension 31 ofthe main burner portion of the burner head. The port 35 is placedadjacent the opening at the outer end of the tube and discharges intothe tube 38 toward the simmer burner. After ignition at the end of thetube near the simmer 'burner the llame travels back through the tube tothe main burner. Thus it is seen that gas can be discharged into thetube from the main burner either through the wall of the tube as shownin the first type or from one end of the tube as shown in the secondtype. The principle o! operation is the same in either case. Themodified form shown in Figures 5 and 6 requires proper proportioning anddesign of the port 35 to reduce the velocity of gas flowing down thetube 38.

Thus from the description and the drawings it can be seen that animproved form of double burner has been devised which provides instantand positive inter-ignition between the main burner and the simmerburner, and which allows more leeway in design of both burners and inthe arrangement of the burners relative to each other, and whichfurthermore can be practically and easily manufactured While I havedescribed more or less precisely the details of construction, 1 do notwish to be understood as limiting myself thereto, as I contemplatechanges in form and the proportion of parts and thesubstitution ofequivalents as circumstances may suggest or render expedient withoutdeparting from the spirit or scope of the appended claims.

I claim.:

1. A gas burner having a simmer section with means for supplying fueland air thereto, means for igniting said simmer section, said burneralso having a main burner section surrounding the simmer section, saidmain burner section having separate means for supplying fuel and airthereto, said simmer section having burner ports therein, and said mainburner section having burner ports therein, said main burner sectionhaving a tube extending therethreugh with an opening at the inner endadjacent at least one of the ports of the simmer section and an openingat the outer endv adjacent at least one of the ports of the main burnersection,'said tube having a port extending through the tube'wall andallowing. for issuance of gas from the main burner section into thetube. i

2. A gas burner having a simmer section with means for supplying fueland air thereto, means for igniting said simmer section, said burneralso having a main burner section surrounding the simmer section, said'main burner section having separate means for supplying fuel and airthereto, said simmer section having burner ports therein, and said mainburner section having Aburner ports therein, said main burner sectionhaving a tube extending therethrough with an opening at the inner c ndadjacent at least one .of the ports of the simmer section and an openingat the outer end adjacent at least one of the ports of the main burnersection, and means 20 whereby gas is causedto enter said tube.

3. A gas burner comprising a main section having an opening therethroughand a simmer section positioned in the opening in the main sectionhaving burner ports therein, means whereby 25 fuel and air are suppliedto each of said sections, means whereby said simmer section is ignited,the main section having an inner and an outer wall, said outer wallhaving burner ports there through discharging at least partiallyoutward, a 30 tube extending through the walls of said main burnersection, one end of which is adjacent at least one burner port of saidsimmer section and the other end of which is adjacent at least oneburner port of the s'aid vmain section; and means whereby gas is causedto enter the said tube.

4. A gas burner comprising a main section of -annular form and a simmersection within the main section having burner ports therein, meanswhereby fuelland air are supplied to each of said sections,means'whereby saidl simmer section is ignited, the main section havingan inner and an outer wall, said outer Wall having burner portstherethrough discharging at least partially outward, a tube extendingthrough the walls of said main burner-section, one end of which isadjacent at least one burner port of -said simmer section and the otherend of which is adjacent at least one burner port of the said mainsection,

CAA

said tube having a port therein in communication with the main burnerchamber.

5. A gas burner comprising a simmer section with means for supplyingfuel and-air thereto, anda main burner section surrounding the simmersection, said main burner section having means for supplying fuel andair thereto, means whereby said simmer section is ignited, the mainsection having an Yinner and an outer wall, said outer wall havingburner ports therethrough discharging at least partially outward, a tubeextending through the walls of said main burner section, one end ofwhich is adjacent one burner port of said simmer section and the otherend of which is adjacent at least one burner port of the said mainsection, and an extension member having -a port therein adapted todirect gas into said tube.

6. A double burner for domestic gas ranges comprising, in combination,an outer burner section having burner ports therein, an inner burnersection having burner ports thereinfthe burner ports in the outer burnerand the inner burner being out of lighting proximity to each other,means whereby fuel and air are supplied to each of said burners, and atube extending through the outer burner, one end'of which is in lightingproximity to at least one burner port of the inner burner and the otherend of which is in lighting. proximity to atleast one burner port ofsaid outer burner, and means whereby fuel is supplied to said tube.

7. A double burner for domestic gas ranges K comprising, in combination,an outer burner section having burner ports therein, an linner burnersection having burner ports therein, the burner ports in the outerburner and'the inner burner being out of lighting proximity to eachother, means whereby fuel and air are supplied to each of said burners,and a tube extending through the outer burner section, the inner end ofwhich is in lighting. proximity to at least one of the ports of the saidinner section and the outer end of which is in lighting proximity to atleast one of the ports of said outer section, the tube having a porttherein in communication with the chamber of the outer burner section.

PHILIP S. HARPER.

